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IEEE 802.11-23/1837r0 Multi-AP Coordination Set-Up Procedure Discussion

This contribution by Jay Yang from ZTE discusses procedures for setting up Multi-AP coordination groups in IEEE 802.11 networks. Topics include MAP group discovery, joining or leaving existing MAP groups, AP ID assignment and recycling, roles of AP-GO and AP-GC, and relaying hidden node information within MAP groups.

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IEEE 802.11-23/1837r0 Multi-AP Coordination Set-Up Procedure Discussion

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  1. Nov. 2023 Doc.: IEEE 802.11-23/1837r0 MAP group set-up operation discussion Name Jay Yang Affiliations Address Phone email Yang.zhijie@zte.com.cn ZTE YanLi Yun Li Qisheng Huang Submission Jay Yang al. (ZTE)

  2. Nov. 2023 Doc.: IEEE 802.11-23/1837r0 Background UHR PAR intends to improve the Reliability via multi-AP coordination scheme • a batch of multi-AP coordination features have been discussed in UHR group • reference [2] and [3] propose to have a candidate AP group where the APs participate MAP coordination scheme. • reference [4] indicates that any AP in the MAP group can be shared or sharing AP in different coordination time slot. • In some of MAP coordination scheme, like C-OFDMA, MAP sounding, AP ID should be defined to identify each shared AP(may including sharing AP) in Trigger frame, NDPA frame. • Submission Slide 2 Jay Yang, et al. (ZTE)

  3. Nov. 2023 Doc.: IEEE 802.11-23/1837r0 Abstract • In this contribution, we intend to have more discussion on the MAP group set-up procedure • In each MAP group, a group owner shall maintain the long-term information for each AP • MAP group information shall be broadcast in a MGMT. frame, so that a new AP can discover and join an existed MAP group. • Some notification procedure should be defined for which each AP in the MAP group can leave/join a MAP group • One AP may relay other two APs information exchange if they are hidden node/BSS in a MAP group Submission Slide 3 Jay Yang, et al. (ZTE)

  4. Nov. 2023 Doc.: IEEE 802.11-23/1837r0 MAP group set-up procedure • Two or more APs form a MAP group via a negotiation procedure:  One AP becomes the group owner(AP-GO) for assigning, maintaining and recycling AP ID.  AP-GO may maintain group key, group identifier,etc.  Other APs in the same group are called group client(AP-GC).  AP-GO/GC can invite a 3rd AP to join an existed MAP group via a MGMT. frame  AP-GC may relay the frame exchange between AP-GO and new joined AP if they are hidden nodes. Submission Slide 4 Jay Yang, et al. (ZTE)

  5. Nov. 2023 Doc.: IEEE 802.11-23/1837r0 MAP group discovery procedure • each AP in an MAP group should broadcast the group identifier in Beacon or other MGMT. frame  Each AP may broadcast neighbour AP’s group identifier in RNR,ML,MBSSID etc.  A new AP may discover an existed MAP group after receiving the Beacon or via other MGMT. frame. Submission Slide 5 Jay Yang, et al. (ZTE)

  6. Nov. 2023 Doc.: IEEE 802.11-23/1837r0 Join and leave an existed MAP group • A new AP may request to join an existed MAP group via a MGMT. frame exchange with an AP-GO or AP-GC • AP-GO will recycle the AP ID if one AP-GC leaves the AP group • AP-GO may broadcast AP ID assignment(AP ID mapping to AP MAC address) to all AP-GCs if an AP join or leave the current group • The AP group should be torn down if AP-GO leaves the current AP group  AP-GO may broadcast AP group torn down message to all AP-GCs Submission Slide 6 Jay Yang, et al. (ZTE)

  7. Nov. 2023 Doc.: IEEE 802.11-23/1837r0 one AP may participate in different MAP groups • MAP may form different AP groups based on certain capability or features. – One AP in the MAP overlap area may join the different MAP groups if it meets their requirements. – The AP in multiple MAP groups should broadcast all the MAP group’s information Submission Slide 7 Jay Yang, et al. (ZTE)

  8. Nov. 2023 Doc.: IEEE 802.11-23/1837r0 Summary • This contribution discusses the following procedures in MAP set-up scheme. – MAP group discovery – join or leave one or more existed MAP groups – AP ID granted and recycle – AP-GO,AP-GC role in MAP group – relay hidden node information in MAP group Submission Slide 8 Jay Yang, et al. (ZTE)

  9. Nov. 2023 Doc.: IEEE 802.11-23/1837r0 THANK YOU   Submission

  10. Nov. 2023 Doc.: IEEE 802.11-23/1837r0 reference • [1] 11-23-0480-00-uhr-uhr-proposed-par.pdf • [2] 11-23-1461-01-Considerations on Multi-AP Operation • [3]11-23-Proposed Amendments for Multi-AP Coordination Language in EHT SFD • [4] 11-23-1066-M-AP Coordination Agreement – follow up Submission Slide 10 Jay Yang, et al. (ZTE)

  11. Nov. 2023 Doc.: IEEE 802.11-23/1837r0 Straw Poll #1 • Do you support to consider to define the MAP group discovery, set-up, tear- down procedure? Submission Slide 11 Jay Yang, et al. (ZTE)

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